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AS 3840.1-1998
[Current]Pressure regulators for use with medical gases, Part 1: Pressure regulators and pressure regulators with flow-metering devices
Specifies requirements for compressed gas regulators and compressed gas regulators with flow-metering devices for use in the medical gas industry. This Standard aligns closely with ISO 10524:1995 and EN 738-1:1997 with magnification and clarification of the test procedures and their test results.
Published: 05/12/1998
Pages: 29
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
PREFACE
1 SCOPE
1.1 General
1.2 Medical gases
1.3 Regulators
1.4 Exceptions
2 REFERENCED DOCUMENTS
3 DEFINITIONS
4 TERMINOLOGY, NOTATION AND UNITS OF MEASUREMENT
4.1 General
4.2 Notation
4.3 Units of measurement
5 MATERIALS AND CLEANLINESS
5.1 Materials
5.2 Alternative construction
5.3 Cleanliness
6 REQUIREMENTS FOR BOURDON TUBE PRESSURE GAUGES
6.1 General
6.2 Dimensions
6.3 Scale reading
6.3.1 Ocular requirements
6.3.2 Scale marking
7 GENERAL REQUIREMENTS FOR PRESSURE REGULATORS
7.1 Inlet connection
7.1.1 Cylinder connection
7.1.2 Terminal unit connection
7.1.3 Removal of inlet connection
7.2 Outlet connection
7.3 Pressure relief valve
7.3.1 General
7.3.2 Pressure limit
7.3.3 Discharge quantity
7.4 Filtration
7.5 Resistance to ignition
7.5.1 General
7.5.2 Ignition of non-metallic components
7.6 Outlet valve
7.6.1 General
7.6.2 Control knob and valve spindle fixing
7.7 Pressure adjusting device
7.7.1 General
7.7.2 Pressure setting
7.8 Mechanical resistance
7.8.1 High-pressure performance requirement
7.8.2 Low-pressure performance limitation requirement
7.8.3 High-pressure rupture limits
7.8.4 Low-pressure chamber pressure retention
7.9 Gas tightness
7.10 Flow characteristics
7.11 Regulators for high-pressure cylinders
7.12 Pressure gauges and flow-gauges
7.12.1 Torque requirements
8 ENVIRONMENTAL TEMPERATURES
8.1 Storage temperature
8.2 Operating temperature
8.3 Temperature testing
9 SPECIAL REQUIREMENTS FOR FLOW MEASURING AND INDICATING DEVICES
9.1 Requirements for pressure regulators fitted with integrally attached flowmeters
9.1.1 Flow control valve
9.1.2 Accuracy of flowmeter graduations
9.1.3 Scale and indications of flowmeters
9.1.4 Flowmeter performance
9.1.5 Flowmeter mechanical resistance
9.1.6 Removal of flowmeter
9.2 Requirements for a stand-alone flowmeter which can be connected to a pressure regulator
9.2.1 General
9.2.2 Flowmeter inlet
9.2.3 Flowmeter inlet pressure
9.3 Requirements for pressure regulators fitted with flow-gauges
9.3.1 General
9.3.2 Accuracy of flow graduations
9.4 Requirements for pressure regulators fitted with fixed orifices
9.4.1 General
9.4.2 Actual flow of flow graduations
9.4.3 Flow setting torque
9.4.4 Removal of orifices
10 OPERATING CHARACTERISTICS
10.1 General
10.2 Closing coefficient of pressure increase
10.3 Outlet pressure of preset regulators
11 MARKING
11.1 General requirements
11.1.1 General
11.1.2 Colour coding
11.1.3 Regulator marks
11.1.4 Pressure gauge and flow-gauge marks
11.2 Special requirements for a stand-alone flowmeter which can be connected to a pressure regulator
12 SEALING AND PACKAGING
13 INFORMATION TO BE SUPPLIED BY MANUFACTURER WITH PRESSURE REGULATOR
14 INFORMATION SUPPLIED BY MANUFACTURER ON REQUEST
15 TEST METHODS
15.1 General
15.2 Test temperatures
15.2.1 General
15.2.2 Temperature stabilization
15.3 Test conditions for performance testing in Appendices A, B and C
15.3.1 General characteristics of the installation
15.3.2 Test bench
15.3.3 Test gas
15.3.4 Reference conditions
15.3.5 Symbols and definitions
APPENDIX A
A1 GENERAL
A2 DETERMINATION OF IRREGULARITY COEFFICIENT, i
APPENDIX B
APPENDIX C
C1 STANDARD DISCHARGE, Q1
C2 GENERAL
C2.1 Equipment
C2.2 Flow characteristic curve
C2.3 Flow characteristic curve adjustable regulators
C3 PRESET REGULATORS
APPENDIX D
D1 GENERAL
D2 PRESSURE RELIEF VALVE TEST
APPENDIX E
E1 ADJUSTABLE PRESSURE REGULATORS ATTACHED TO HIGH PRESSURE CYLINDERS
E2 PRESET PRESSURE REGULATORS ATTACHED TO HP CYLINDERS
APPENDIX F
APPENDIX G
G1 GENERAL
G2 TEST OF INLET PRESSURE CHAMBER PRIOR TO PERFORMANCE TESTING
G3 TEST OF OUTLET PRESSURE CHAMBER PRIOR TO PERFORMANCE TESTING
G4 RUPTURE TEST OF INLET PRESSURE PORTION OF PRESSURE REGULATOR
G5 RUPTURE TEST OF OUTLET PRESSURE PORTION OF PRESSURE REGULATOR
G6 LOW PRESSURE CHAMBER PRESSURE RETENTION TEST
G7 FLOWMETER PRESSURE TEST PRIOR TO PERFORMANCE TESTING
G8 RUPTURE TEST OF FLOWMETERS
APPENDIX H
H1 INTERNAL GAS TIGHTNESS
H2 ADJUSTABLE PRESSURE REGULATORS
H3 PRESET PRESSURE REGULATORS
H4 EXTERNAL GAS TIGHTNESS
Cited references in this standard
[Current]
Gas cylinders for industrial, scientific, medical and refrigerant use — Labelling and colour coding
[Current]
Medical gas systems - Installation and testing of non-flammable medical gas pipeline systems
Content history
AS 3840.1-1998 Rec:2016
DR 97487
$113.50
AUD
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